I found an out of bounds glitch inside the castle. It doesnt look like this could be useful, but something to note none the less.
https://youtu.be/QnOB8ws1jN8

This one is actually already known, but thanks for posting. You can also clip out of bounds from the other side of that corner by jumping towards the topleft corner and grabbing an invisible ledge. I managed to die from falling out of bounds and then get teleported up onto a pillar's edge as I died and still be able to control Mario as the Bowser mask faded out. I'll probably place invisible blocks around these two corners.

This one will also be fixed, but since you love glitches, I might as well post it. You can really break these doors in the inside of the castle. You need to charge up a run and dive into any door, and if you dive into the middle of the door you'll always have enough speed to clip through it; an easier method is to dive and then hit the door as you roll up from a dive, and if you hit the door when Mario's rolling animation is playing, you'll always clip through the door. This is easily fixed with, once again, invisible blocks.

Another glitch allows you to kill yourself without going out of bounds. Remember the wall climb in Bob-omb Battlefield? Well, if you go to the corner on the left of the open door leading to Cool Cool Mountain and start pushing Mario against the corner, you can jump infinitely as you can in BBB. Now simply jump until you hit the ceiling and steer Mario to hit the bottom floor and you'll take fall damage. Do it 4 times and you're dead :)
I'm not sure how to fix this one yet, maybe place more invisible blocks? xD

I also noticed the 1up sound isn't playing. No idea what's up with that.

By the way, the glitches you found in the outside of the castle are fixed. I added invisible blocks on the ledge you clipped through and put an invisible exterior wall around the entire scene so you can't jump off. Also the sliding angle is increased so Mario doesn't slide around everywhere which also fixed the sliding softlock.

Oob glitch inside castle

Caidren

Super Mario 64 HD Remake

FrostySR

EUR / PAL

Any%

Glitchless

Run Type

Mario Fan Games

Release: V1.4

Rules regarding versions

Ps4 Controller compatability?

"Universal" version for all categories?

Super Mario Remake 1.4 Source Code

Requesting for v1.4.1 or v1.5 update

SlushPuppy

BurgerBobby

TheLegendaryKillerXD

jillval

MATCHINGBOX